cannot import QWaylandSeat

tubbadu

Hello! I'm trying to use QWaylandSeat to emulate keyboard input from my application (QT5)

just including

 #include <QWaylandSeat>

in my main.cpp file gives this error:

fatal error: QWaylandSeat: File or directory does not exists
2 | #include <QWaylandSeat>
|          ^~~~~~~~~~~~~~
compilation terminated.

so I tried adding in my CMakeLists.txt this:

find_package(Qt5 REQUIRED COMPONENTS Waylandcompositor)
target_link_libraries(mytarget PRIVATE Qt5::Waylandcompositor)

as specified in the Qt6 doc page, not the Qt5, editing just the lines where the Qt version was specified, from Qt6 to Qt5.
This is the output:

CMake Error at /usr/lib64/cmake/Qt5/Qt5Config.cmake:28 (find_package):
Could not find a package configuration file provided by
"Qt5Waylandcompositor" with any of the following names:

Qt5WaylandcompositorConfig.cmake
qt5waylandcompositor-config.cmake

Add the installation prefix of "Qt5Waylandcompositor" to CMAKE_PREFIX_PATH
or set "Qt5Waylandcompositor_DIR" to a directory containing one of the
above files.  If "Qt5Waylandcompositor" provides a separate development
package or SDK, be sure it has been installed.
Call Stack (most recent call first):
src/CMakeLists.txt:4 (find_package)

I did a dnf search and installed those packages:

wayland-devel
kf5-kwayland-devel.x86_64
qt5-qtwayland (already installed)
qt5-qtwayland-devel (already installed)

but nothing changed, always same error

what is the problem? Am I missing a package?

I'm running Fedora36 KDE spin with wayland session

thanks in advance!

jsulm

@tubbadu I never used this module, but maybe you need to install it first? Some modules are not installed automatically.

tubbadu

what package could it be? qt5-qtwayland and qt5-qtwayland-devel are already installed

is there somewhere in the docs that says which package does it belongs to?

thanks for the answer!

jsulm

@tubbadu So, you installed your Linux distribution packaged Qt? In that case you will not find anything in Qt documentation as packaging is up to the Linux distribution. Is this the only Qt version installed on your machine?
On my Ubuntu machine I have this package: libqt5waylandcompositor5

tubbadu

@jsulm those are the packages I get running dnf search qt wayland:

gambas3-gb-qt5-wayland.x86_64 : Gambas3 component package for qt5-wayland
qt5-qtwayland.x86_64 : Qt5 - Wayland platform support and QtCompositor module
qt5-qtwayland.i686 : Qt5 - Wayland platform support and QtCompositor module
qt5-qtwayland-devel.x86_64 : Development files for qt5-qtwayland
qt5-qtwayland-devel.i686 : Development files for qt5-qtwayland
qt5-qtwayland-doc.noarch : Documentation for qtwayland
qt5-qtwayland-examples.x86_64 : Programming examples for qt5-qtwayland
qt6-qtwayland.x86_64 : Qt6 - Wayland platform support and QtCompositor module
qt6-qtwayland.i686 : Qt6 - Wayland platform support and QtCompositor module
qt6-qtwayland-devel.i686 : Development files for qt6-qtwayland
qt6-qtwayland-devel.x86_64 : Development files for qt6-qtwayland
qt6-qtwayland-examples.x86_64 : Programming examples for qt6-qtwayland

(I'm on fedora36 KDE spin)
is fedora missing a package?

thanks!

jsulm

@tubbadu said in cannot import QWaylandSeat:

is fedora missing a package?

I don't know. You could also check the content of the *-devel packages to see whether one of them contains QWaylandSeat header file.